FBI Shares Chilling Video of Washington Navy Yard Killer Aaron Alexis

The FBI has released footage of Aaron Alexis at the Washington Navy Yard on the day of his killing spree last week.

It’s a terrifying look into his actions, from the moment he drives into the yard to the point where he can be seen carrying a Remington 870 shotgun through the halls.

The FBI also released the timeline of events that played out that day, beginning with Alexis arriving at the yard at 7:53 a.m. and lasting until he was shot and killed by officers at 9:25 a.m. In addition, the agency has put out photos with Alexis at the yard.

Alexis, 34, killed 12 people during his rampage and left nearly two dozen injured.